This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: 1. Suppose X is normally distributed with a mean of 8 and a variance of 4. What is the probability that X is greater than 0 but less than 8? (Your answer should be correct to one decimal place.) Answer 1 points Question 2 1. A standardized test that has been used by employees to screen job applicants is known to produce scores that are normally distributed with a mean of 70 and a standard deviation of 9. Suppose a particular firm requires applicants to score in the top 20% of test scores before being considered for employment. What score would a job applicant require to be considered by this firm? (Your answer should be correct to one decimal place.) Answer 1 points Question 3 1. If an estimator is said to be unbiased then the population mean equals the sample mean. Answer True False 1 points Question 4 1. If a random sample of size 15 is drawn from a population distribution with standard deviation =10 then what will be the variance of the sampling distribution of the sample mean? (Your answer should be correct If a random sample of size 15 is drawn from a population distribution with standard deviation =10 then what will be the variance of the sampling distribution of the sample mean?...
View
Full
Document
This note was uploaded on 07/18/2011 for the course ECON 1203 taught by Professor Denzilgfiebig during the Three '11 term at University of New South Wales.
 Three '11
 DenzilGFiebig

Click to edit the document details